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Time-Modulated Arrays With Haar Wavelets
(Institute of Electrical and Electronics Engineers, 2020-11)
[Abstract]. Time-modulated arrays (TMAs) can effectively perform beamsteering over the first positive harmonic pattern by applying progressively delayed versions of stair-step approximations of a sine waveform to the antenna ...
TMA–FDA Range-Angle Beamforming With Periodic Linear-Phase Time-Modulating Waveforms
(Institute of Electrical and Electronics Engineers, 2022)
[Abstract]: Frequency diverse arrays (FDAs) provide range-angle time-invariant transmit–receive beamforming, although a fine focus of their radiation patterns is costly since high-resolution mixers and phase shifters are ...
Time-Modulated Arrays Controlled With Sinusoidal Pulsewidth Modulation
(Institute of Electrical and Electronics Engineers, 2020)
[Abstract]: In this letter, sinusoidal pulsewidth modulation (PWM) is applied to the design of time-modulated arrays (TMAs). The array excitations are modulated using PWM-synthesized sine waveforms. This provides increased ...
A TMA-FDA Approach for Two-Beam Steering
(Institute of Electrical and Electronics Engineers, 2021)
[Abstract]: Frequency diverse arrays (FDAs) allow the synthesis of dot-shaped radiated patterns in the range-angle space by applying frequency offsets to the antenna elements. Conventional FDAs are usually implemented with ...
Combining Switched TMAs and FDAs to Synthesize Dot-Shaped Beampatterns
(Institute of Electrical and Electronics Engineers, 2021)
[Abstract]: The application of frequency offsets to the elements of a conventional phased array with variable phase shifters (VPSs) leads to frequency diverse arrays (FDAs) with the ability to provide range-angle spatial ...